1111110091 has 16 divisors (see below), whose sum is σ = 1411637248. Its totient is φ = 850759200.

The previous prime is 1111110083. The next prime is 1111110097. The reversal of 1111110091 is 1900111111.

It is a cyclic number.

It is not a de Polignac number, because 1111110091 - 2³ = 1111110083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111110097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194115 + ... + 199756.

It is an arithmetic number, because the mean of its divisors is an integer number (88227328).

Almost surely, 2^1111110091 is an apocalyptic number.

1111110091 is a deficient number, since it is larger than the sum of its proper divisors (300527157).

1111110091 is a wasteful number, since it uses less digits than its factorization.

1111110091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393922.

The product of its (nonzero) digits is 9, while the sum is 16.

The square root of 1111110091 is about 33333.3180316632. The cubic root of 1111110091 is about 1035.7438516789.

The spelling of 1111110091 in words is "one billion, one hundred eleven million, one hundred ten thousand, ninety-one".